Tray for drying-machines.



W. H. RIHL & E. B. AYRBS.

TRAY FOR DRYING MACHINES.

APPLIGATION FILED JAN. 9, 1.913.

Patented Jan. 26, 1915.

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mais earns man WILLIAM H. RIHL AND ELWOOD IB. AYRES, OF PHILADELPHIA,PENNSYLVANIA, ASSIGNORS TO THE PHILADELPHIA TEXTILE MACHINERY CQIVJPANY,OF PHIL- ADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

TRAY FOR IDRYING-MACI-IINES.

Application led January 9, 1913.

To all whom 'it may concern:

Be it known that we, WILLIAM H. RIHL and ELwooD B. Arens, citizens ofthe United States, residing in Philadelphia, county of Philadelphia,State of Pennsylvania, have invented certain Improvements in Trays forDrying-Machines, of which the following is a specification.

rlChe object of this invention is to construct a tray for properlysupporting a leather board during the process of drying so that theedges of the board will not dry out before the body of the board is dry;thus pre venting warping and buckling of the board.

In the accompanying drawings Figure 1 is a perspective view of ourimproved tray; Fig. 2 is a detached perspective view of the frame; F ig.3 is a plan view of the tray with the frame in position; Fig. l is asectional view of the tray on the line 4 4, Fig. 3, showing the frameand the leather board in position; and Fig. 5 is an enlarged sectionalview illustrating the leather board resting directly on the frame.

Our improved tray is so designed that it can be mounted on a truck,which is traversed through a drying machine and it is essential,especially in the drying of leather boards, to prevent the edges of theboard from drying faster than the middle of the board; otherwise, theboard is apt to crack and to warp at the edges during the calenderingprocess.

Referring to the drawings, A is the tray made of channel bars a.

B are wires crossing each other, as shown, so as to form a suitableperforated supporting bottom for the leather board; the mesh being aboutone and a half inches in the present instance, although this may vary.

l) is a frame made of imperforate thin sheet metal and preferablysecured directly Specification of Letters Patent.

Patented Jan., 26, 1915. serial No. 740,972.

to the surface of the wire screen, although 1t may be detachably mountedthereon, if desired.

Leather board is usually cut to a standard size and the operator, whenplacing a board on the tray, arranges it thereon so that the edges ofthe board overlap and rest directly upon the frame, preventing anycirculation of air between the board and the frame. `When the truck,with the trays thereon, is inserted in the drier, the action of the heatis to dry the body of the board on both sides, while the edges areprevented by the frame from drying as rapidly as the body, thuspreventing buckling and producing a thoroughly dried board and one whichis substantially flat.

We claim:

The combination of a tray for drying leather or paper board having aseries of wires extending from one side to the other and below the upperedge thereof and forming a perforate bottom for supporting the board tobe dried; and a separate imperforate frame, open at the center, andarranged to be located within the tray, said frame being thin and havingan uninterrupted smooth upper surface so that when the board to be driedis placed on the tray the edges of the board will rest upon the smoothupper surface of the frame, preventing the heated air which passes overand under the tray from gaining access to that portion of the boardresting on the frame.

In testimony whereof, we have signed our names to this specification, inthe presence of two subscribing witnesses.

WILLIAM H. RIHL. ELWOOD B. AYE-ES. Witnesses:

Jos. H. KLEIN, WM. A. BARR.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

` Washington, D. C.

